| 小房间内低频衰减 |
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| 引用本文： | 沈小祥,顾善勇,沈勇,赵其昌. 小房间内低频衰减[J]. 声学技术, 2004, 23(2): 98-101 |
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| 作者姓名： | 沈小祥 顾善勇 沈勇 赵其昌 |
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| 作者单位： | 南京大学声学研究所近代声学国家重点实验室,南京,210093 |
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| 摘 要： | 文章结合混响时间公式的建立过程，讨论了小房间内低频驻波的衰减问题，解释了低频驻波影响下，混响时间的频率响应曲线在低频区发生的起伏现象。文中以南京华艺音像有限公司录音室的声学设计过程为例，介绍了避免这种低频区起伏的设计方案。测量结果表明我们的设计实现了平坦的混响时间曲线和安静的声学环境。
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| 关 键 词： | 房屋建筑 混响时间 低频驻波 衰减 频率响应曲线 声学设计 |
| 文章编号： | 1000-3630(2004)02-0098-04 |
| 收稿时间： | 2003-01-24 |
| 修稿时间： | 2003-05-12 |
Acoustic decay at low frequencies in a small room |
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| SHEN Xiao-xiang,GU Shan-yong,SHEN Yong and ZHAO Qi-chang. Acoustic decay at low frequencies in a small room[J]. Technical Acoustics, 2004, 23(2): 98-101 |
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| Authors: | SHEN Xiao-xiang GU Shan-yong SHEN Yong ZHAO Qi-chang |
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| Affiliation: | SHEN Xiao-xiang,GU Shan-yong,SHEN Yong,ZHAO Qi-changryof Modern Acoustics,Nanjing 210093,China) |
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| Abstract: | This paper discusses decay of standing waves in a small room based on the formation of reverberation time equation. Fluctuations in the reverberation time curve at low frequencies are interpreted as a consequence of standing waves. Methods for avoiding such fluctuations are introduced with the acoustic design of the studio of Huayi Audio-Video Co. Ltd. of Nanjing as an example. The measurement results show that a flat reverberation time curve and quiet circumstance have been achieved in the design. |
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| Keywords: | reverberation time decay mode |
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